Judge the assertion and the reason

Exercise and reference answers

Questions

1. Reason

   Insulin makes body cells take glucose out of the blood and the liver store it as glycogen.

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   Insulin lowers the level of glucose in the blood.

2. Reason

   Melatonin is secreted by the pineal gland.

   Verdict

   Both are true; the reason does not explain the assertion.

   Assertion

   Melatonin helps regulate the circadian rhythm.

3. Reason

   Parathyroid hormone is released in answer to a rise in blood calcium.

   Verdict

   The assertion is true and the reason is false.

   Assertion

   Parathyroid hormone raises blood calcium when it falls too low.

4. Reason

   Hormones travel through the bloodstream to reach their target cells.

   Verdict

   The assertion is false and the reason is true.

   Assertion

   Endocrine signalling is faster than neural signalling.

Instructions

Read both statements, then pick the verdict that fits.

Explanation